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      SHA1 加密
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        <h5 id="SHA1-加密"><a href="#SHA1-加密" class="headerlink" title="SHA1 加密"></a>SHA1 加密</h5><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br><span class="line">180</span><br><span class="line">181</span><br><span class="line">182</span><br><span class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br><span class="line">186</span><br><span class="line">187</span><br><span class="line">188</span><br><span class="line">189</span><br><span class="line">190</span><br><span class="line">191</span><br><span class="line">192</span><br><span class="line">193</span><br><span class="line">194</span><br><span class="line">195</span><br><span class="line">196</span><br><span class="line">197</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">SHA1</span> </span>&#123;</span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">final</span> <span class="keyword">int</span>[] abcde = &#123;</span><br><span class="line">            <span class="number">0x67452301</span>, <span class="number">0xefcdab89</span>, <span class="number">0x98badcfe</span>, <span class="number">0x10325476</span>, <span class="number">0xc3d2e1f0</span></span><br><span class="line">    &#125;;</span><br><span class="line">    <span class="comment">// 摘要数据存储数组</span></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">int</span>[] digestInt = <span class="keyword">new</span> <span class="keyword">int</span>[<span class="number">5</span>];</span><br><span class="line">    <span class="comment">// 计算过程中的临时数据存储数组</span></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">int</span>[] tmpData = <span class="keyword">new</span> <span class="keyword">int</span>[<span class="number">80</span>];</span><br><span class="line">    <span class="comment">// 计算sha-1摘要</span></span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">int</span> <span class="title">process_input_bytes</span><span class="params">(<span class="keyword">byte</span>[] bytedata)</span> </span>&#123;</span><br><span class="line">        <span class="comment">// 初试化常量</span></span><br><span class="line">        System.arraycopy(abcde, <span class="number">0</span>, digestInt, <span class="number">0</span>, abcde.length);</span><br><span class="line">        <span class="comment">// 格式化输入字节数组，补10及长度数据</span></span><br><span class="line">        <span class="keyword">byte</span>[] newbyte = byteArrayFormatData(bytedata);</span><br><span class="line">        <span class="comment">// 获取数据摘要计算的数据单元个数</span></span><br><span class="line">        <span class="keyword">int</span> MCount = newbyte.length / <span class="number">64</span>;</span><br><span class="line">        <span class="comment">// 循环对每个数据单元进行摘要计算</span></span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> pos = <span class="number">0</span>; pos &lt; MCount; pos++) &#123;</span><br><span class="line">            <span class="comment">// 将每个单元的数据转换成16个整型数据，并保存到tmpData的前16个数组元素中</span></span><br><span class="line">            <span class="keyword">for</span> (<span class="keyword">int</span> j = <span class="number">0</span>; j &lt; <span class="number">16</span>; j++) &#123;</span><br><span class="line">                tmpData[j] = byteArrayToInt(newbyte, (pos * <span class="number">64</span>) + (j * <span class="number">4</span>));</span><br><span class="line">            &#125;</span><br><span class="line">            <span class="comment">// 摘要计算函数</span></span><br><span class="line">            encrypt();</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> <span class="number">20</span>;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 格式化输入字节数组格式</span></span><br><span class="line">    <span class="keyword">private</span> <span class="keyword">byte</span>[] byteArrayFormatData(<span class="keyword">byte</span>[] bytedata) &#123;</span><br><span class="line">        <span class="comment">// 补0数量</span></span><br><span class="line">        <span class="keyword">int</span> zeros = <span class="number">0</span>;</span><br><span class="line">        <span class="comment">// 补位后总位数</span></span><br><span class="line">        <span class="keyword">int</span> size = <span class="number">0</span>;</span><br><span class="line">        <span class="comment">// 原始数据长度</span></span><br><span class="line">        <span class="keyword">int</span> n = bytedata.length;</span><br><span class="line">        <span class="comment">// 模64后的剩余位数</span></span><br><span class="line">        <span class="keyword">int</span> m = n % <span class="number">64</span>;</span><br><span class="line">        <span class="comment">// 计算添加0的个数以及添加10后的总长度</span></span><br><span class="line">        <span class="keyword">if</span> (m &lt; <span class="number">56</span>) &#123;</span><br><span class="line">            zeros = <span class="number">55</span> - m;</span><br><span class="line">            size = n - m + <span class="number">64</span>;</span><br><span class="line">        &#125; <span class="keyword">else</span> <span class="keyword">if</span> (m == <span class="number">56</span>) &#123;</span><br><span class="line">            zeros = <span class="number">63</span>;</span><br><span class="line">            size = n + <span class="number">8</span> + <span class="number">64</span>;</span><br><span class="line">        &#125; <span class="keyword">else</span> &#123;</span><br><span class="line">            zeros = <span class="number">63</span> - m + <span class="number">56</span>;</span><br><span class="line">            size = (n + <span class="number">64</span>) - m + <span class="number">64</span>;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">// 补位后生成的新数组内容</span></span><br><span class="line">        <span class="keyword">byte</span>[] newbyte = <span class="keyword">new</span> <span class="keyword">byte</span>[size];</span><br><span class="line">        <span class="comment">// 复制数组的前面部分</span></span><br><span class="line">        System.arraycopy(bytedata, <span class="number">0</span>, newbyte, <span class="number">0</span>, n);</span><br><span class="line">        <span class="comment">// 获得数组Append数据元素的位置</span></span><br><span class="line">        <span class="keyword">int</span> l = n;</span><br><span class="line">        <span class="comment">// 补1操作</span></span><br><span class="line">        newbyte[l++] = (<span class="keyword">byte</span>) <span class="number">0x80</span>;</span><br><span class="line">        <span class="comment">// 补0操作</span></span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i = <span class="number">0</span>; i &lt; zeros; i++) &#123;</span><br><span class="line">            newbyte[l++] = (<span class="keyword">byte</span>) <span class="number">0x00</span>;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">// 计算数据长度，补数据长度位共8字节，长整型</span></span><br><span class="line">        <span class="keyword">long</span> N = (<span class="keyword">long</span>) n * <span class="number">8</span>;</span><br><span class="line">        <span class="keyword">byte</span> h8 = (<span class="keyword">byte</span>) (N &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h7 = (<span class="keyword">byte</span>) ((N &gt;&gt; <span class="number">8</span>) &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h6 = (<span class="keyword">byte</span>) ((N &gt;&gt; <span class="number">16</span>) &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h5 = (<span class="keyword">byte</span>) ((N &gt;&gt; <span class="number">24</span>) &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h4 = (<span class="keyword">byte</span>) ((N &gt;&gt; <span class="number">32</span>) &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h3 = (<span class="keyword">byte</span>) ((N &gt;&gt; <span class="number">40</span>) &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h2 = (<span class="keyword">byte</span>) ((N &gt;&gt; <span class="number">48</span>) &amp; <span class="number">0xFF</span>);</span><br><span class="line">        <span class="keyword">byte</span> h1 = (<span class="keyword">byte</span>) (N &gt;&gt; <span class="number">56</span>);</span><br><span class="line">        newbyte[l++] = h1;</span><br><span class="line">        newbyte[l++] = h2;</span><br><span class="line">        newbyte[l++] = h3;</span><br><span class="line">        newbyte[l++] = h4;</span><br><span class="line">        newbyte[l++] = h5;</span><br><span class="line">        newbyte[l++] = h6;</span><br><span class="line">        newbyte[l++] = h7;</span><br><span class="line">        newbyte[l++] = h8;</span><br><span class="line">        <span class="keyword">return</span> newbyte;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">int</span> <span class="title">f1</span><span class="params">(<span class="keyword">int</span> x, <span class="keyword">int</span> y, <span class="keyword">int</span> z)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> (x &amp; y) | (~x &amp; z);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">int</span> <span class="title">f2</span><span class="params">(<span class="keyword">int</span> x, <span class="keyword">int</span> y, <span class="keyword">int</span> z)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> x ^ y ^ z;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">int</span> <span class="title">f3</span><span class="params">(<span class="keyword">int</span> x, <span class="keyword">int</span> y, <span class="keyword">int</span> z)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> (x &amp; y) | (x &amp; z) | (y &amp; z);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">int</span> <span class="title">f4</span><span class="params">(<span class="keyword">int</span> x, <span class="keyword">int</span> y)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> (x &lt;&lt; y) | x &gt;&gt;&gt; (<span class="number">32</span> - y);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 单元摘要计算函数</span></span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">void</span> <span class="title">encrypt</span><span class="params">()</span> </span>&#123;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i = <span class="number">16</span>; i &lt;= <span class="number">79</span>; i++) &#123;</span><br><span class="line">            tmpData[i] = f4(tmpData[i - <span class="number">3</span>] ^ tmpData[i - <span class="number">8</span>] ^ tmpData[i - <span class="number">14</span>] ^</span><br><span class="line">                    tmpData[i - <span class="number">16</span>], <span class="number">1</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">int</span>[] tmpabcde = <span class="keyword">new</span> <span class="keyword">int</span>[<span class="number">5</span>];</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i1 = <span class="number">0</span>; i1 &lt; tmpabcde.length; i1++) &#123;</span><br><span class="line">            tmpabcde[i1] = digestInt[i1];</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> j = <span class="number">0</span>; j &lt;= <span class="number">19</span>; j++) &#123;</span><br><span class="line">            <span class="keyword">int</span> tmp = f4(tmpabcde[<span class="number">0</span>], <span class="number">5</span>) +</span><br><span class="line">                    f1(tmpabcde[<span class="number">1</span>], tmpabcde[<span class="number">2</span>], tmpabcde[<span class="number">3</span>]) + tmpabcde[<span class="number">4</span>] +</span><br><span class="line">                    tmpData[j] + <span class="number">0x5a827999</span>;</span><br><span class="line">            tmpabcde[<span class="number">4</span>] = tmpabcde[<span class="number">3</span>];</span><br><span class="line">            tmpabcde[<span class="number">3</span>] = tmpabcde[<span class="number">2</span>];</span><br><span class="line">            tmpabcde[<span class="number">2</span>] = f4(tmpabcde[<span class="number">1</span>], <span class="number">30</span>);</span><br><span class="line">            tmpabcde[<span class="number">1</span>] = tmpabcde[<span class="number">0</span>];</span><br><span class="line">            tmpabcde[<span class="number">0</span>] = tmp;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> k = <span class="number">20</span>; k &lt;= <span class="number">39</span>; k++) &#123;</span><br><span class="line">            <span class="keyword">int</span> tmp = f4(tmpabcde[<span class="number">0</span>], <span class="number">5</span>) +</span><br><span class="line">                    f2(tmpabcde[<span class="number">1</span>], tmpabcde[<span class="number">2</span>], tmpabcde[<span class="number">3</span>]) + tmpabcde[<span class="number">4</span>] +</span><br><span class="line">                    tmpData[k] + <span class="number">0x6ed9eba1</span>;</span><br><span class="line">            tmpabcde[<span class="number">4</span>] = tmpabcde[<span class="number">3</span>];</span><br><span class="line">            tmpabcde[<span class="number">3</span>] = tmpabcde[<span class="number">2</span>];</span><br><span class="line">            tmpabcde[<span class="number">2</span>] = f4(tmpabcde[<span class="number">1</span>], <span class="number">30</span>);</span><br><span class="line">            tmpabcde[<span class="number">1</span>] = tmpabcde[<span class="number">0</span>];</span><br><span class="line">            tmpabcde[<span class="number">0</span>] = tmp;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> l = <span class="number">40</span>; l &lt;= <span class="number">59</span>; l++) &#123;</span><br><span class="line">            <span class="keyword">int</span> tmp = f4(tmpabcde[<span class="number">0</span>], <span class="number">5</span>) +</span><br><span class="line">                    f3(tmpabcde[<span class="number">1</span>], tmpabcde[<span class="number">2</span>], tmpabcde[<span class="number">3</span>]) + tmpabcde[<span class="number">4</span>] +</span><br><span class="line">                    tmpData[l] + <span class="number">0x8f1bbcdc</span>;</span><br><span class="line">            tmpabcde[<span class="number">4</span>] = tmpabcde[<span class="number">3</span>];</span><br><span class="line">            tmpabcde[<span class="number">3</span>] = tmpabcde[<span class="number">2</span>];</span><br><span class="line">            tmpabcde[<span class="number">2</span>] = f4(tmpabcde[<span class="number">1</span>], <span class="number">30</span>);</span><br><span class="line">            tmpabcde[<span class="number">1</span>] = tmpabcde[<span class="number">0</span>];</span><br><span class="line">            tmpabcde[<span class="number">0</span>] = tmp;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> m = <span class="number">60</span>; m &lt;= <span class="number">79</span>; m++) &#123;</span><br><span class="line">            <span class="keyword">int</span> tmp = f4(tmpabcde[<span class="number">0</span>], <span class="number">5</span>) +</span><br><span class="line">                    f2(tmpabcde[<span class="number">1</span>], tmpabcde[<span class="number">2</span>], tmpabcde[<span class="number">3</span>]) + tmpabcde[<span class="number">4</span>] +</span><br><span class="line">                    tmpData[m] + <span class="number">0xca62c1d6</span>;</span><br><span class="line">            tmpabcde[<span class="number">4</span>] = tmpabcde[<span class="number">3</span>];</span><br><span class="line">            tmpabcde[<span class="number">3</span>] = tmpabcde[<span class="number">2</span>];</span><br><span class="line">            tmpabcde[<span class="number">2</span>] = f4(tmpabcde[<span class="number">1</span>], <span class="number">30</span>);</span><br><span class="line">            tmpabcde[<span class="number">1</span>] = tmpabcde[<span class="number">0</span>];</span><br><span class="line">            tmpabcde[<span class="number">0</span>] = tmp;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i2 = <span class="number">0</span>; i2 &lt; tmpabcde.length; i2++) &#123;</span><br><span class="line">            digestInt[i2] = digestInt[i2] + tmpabcde[i2];</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> n = <span class="number">0</span>; n &lt; tmpData.length; n++) &#123;</span><br><span class="line">            tmpData[n] = <span class="number">0</span>;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 4字节数组转换为整数</span></span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">int</span> <span class="title">byteArrayToInt</span><span class="params">(<span class="keyword">byte</span>[] bytedata, <span class="keyword">int</span> i)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> ((bytedata[i] &amp; <span class="number">0xff</span>) &lt;&lt; <span class="number">24</span>) | ((bytedata[i + <span class="number">1</span>] &amp; <span class="number">0xff</span>) &lt;&lt; <span class="number">16</span>) |</span><br><span class="line">                ((bytedata[i + <span class="number">2</span>] &amp; <span class="number">0xff</span>) &lt;&lt; <span class="number">8</span>) | (bytedata[i + <span class="number">3</span>] &amp; <span class="number">0xff</span>);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 整数转换为4字节数组</span></span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">void</span> <span class="title">intToByteArray</span><span class="params">(<span class="keyword">int</span> intValue, <span class="keyword">byte</span>[] byteData, <span class="keyword">int</span> i)</span> </span>&#123;</span><br><span class="line">        byteData[i] = (<span class="keyword">byte</span>) (intValue &gt;&gt;&gt; <span class="number">24</span>);</span><br><span class="line">        byteData[i + <span class="number">1</span>] = (<span class="keyword">byte</span>) (intValue &gt;&gt;&gt; <span class="number">16</span>);</span><br><span class="line">        byteData[i + <span class="number">2</span>] = (<span class="keyword">byte</span>) (intValue &gt;&gt;&gt; <span class="number">8</span>);</span><br><span class="line">        byteData[i + <span class="number">3</span>] = (<span class="keyword">byte</span>) intValue;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 将字节转换为十六进制字符串</span></span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">static</span> String <span class="title">byteToHexString</span><span class="params">(<span class="keyword">byte</span> ib)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">char</span>[] Digit = &#123;</span><br><span class="line">                <span class="string">'0'</span>, <span class="string">'1'</span>, <span class="string">'2'</span>, <span class="string">'3'</span>, <span class="string">'4'</span>, <span class="string">'5'</span>, <span class="string">'6'</span>, <span class="string">'7'</span>, <span class="string">'8'</span>, <span class="string">'9'</span>, <span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>,</span><br><span class="line">                <span class="string">'d'</span>, <span class="string">'e'</span>, <span class="string">'f'</span></span><br><span class="line">        &#125;;</span><br><span class="line">        <span class="keyword">char</span>[] ob = <span class="keyword">new</span> <span class="keyword">char</span>[<span class="number">2</span>];</span><br><span class="line">        ob[<span class="number">0</span>] = Digit[(ib &gt;&gt;&gt; <span class="number">4</span>) &amp; <span class="number">0X0F</span>];</span><br><span class="line">        ob[<span class="number">1</span>] = Digit[ib &amp; <span class="number">0X0F</span>];</span><br><span class="line">        String s = <span class="keyword">new</span> String(ob);</span><br><span class="line">        <span class="keyword">return</span> s;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 将字节数组转换为十六进制字符串</span></span><br><span class="line">    <span class="function"><span class="keyword">private</span> <span class="keyword">static</span> String <span class="title">byteArrayToHexString</span><span class="params">(<span class="keyword">byte</span>[] bytearray)</span> </span>&#123;</span><br><span class="line">        String strDigest = <span class="string">""</span>;</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i = <span class="number">0</span>; i &lt; bytearray.length; i++) &#123;</span><br><span class="line">            strDigest += byteToHexString(bytearray[i]);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> strDigest;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 计算sha-1摘要，返回相应的字节数组</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">byte</span>[] getDigestOfBytes(<span class="keyword">byte</span>[] byteData) &#123;</span><br><span class="line">        process_input_bytes(byteData);</span><br><span class="line">        <span class="keyword">byte</span>[] digest = <span class="keyword">new</span> <span class="keyword">byte</span>[<span class="number">20</span>];</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i = <span class="number">0</span>; i &lt; digestInt.length; i++) &#123;</span><br><span class="line">            intToByteArray(digestInt[i], digest, i * <span class="number">4</span>);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> digest;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">// 计算sha-1摘要，返回相应的十六进制字符串</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> String <span class="title">getDigestOfString</span><span class="params">(<span class="keyword">byte</span>[] byteData)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> byteArrayToHexString(getDigestOfBytes(byteData));</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
      
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